European patents are granted for some or all of the contracting states to the European Patent Convention (EPC). They can also be extended to the current extension and validation states.
Advice for inventors and companies interested in filing a patent application with the EPO.
At the request of the applicant/owner, European patent applications and patents may be extended to or validated in third countries for which an extension or validation agreement has entered into force.
Opponents have up to nine months after grant in which they can challenge a European patent by filing an opposition with the EPO.
Some EPC contracting states as well as extension and validation states require a translation of the granted patent in their language for validation purposes.
Decisions taken by the Receiving Section, examining and opposition divisions or the Legal Division are appealable. Appeals are decided by independent boards of appeal.